should fur
Regular verb: fur - furred- furred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd fur
you'd fur
he'd fur
we'd fur
you'd fur
they'd fur 	I'd be furring
you'd be furring
he'd be furring
we'd be furring
you'd be furring
they'd be furring	I should've furred
you should've furred
he should've furred
we should've furred
you should've furred
they should've furred	I should've been furring
you should've been furring
he should've been furring
we should've been furring
you should've been furring
they should've been furring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't fur
you shouldn't fur
he shouldn't fur
we shouldn't fur
you shouldn't fur
they shouldn't fur 	I shouldn't be furring
you shouldn't be furring
he shouldn't be furring
we shouldn't be furring
you shouldn't be furring
they shouldn't be furring	I shouldn't have furred
you shouldn't have furred
he shouldn't have furred
we shouldn't have furred
you shouldn't have furred
they shouldn't have furred	I shouldn't have been furring
you shouldn't have been furring
he shouldn't have been furring
we shouldn't have been furring
you shouldn't have been furring
they shouldn't have been furring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I fur?
should you fur?
should he fur?
should we fur?
should you fur?
should they fur? 	should I be furring?
should you be furring?
should he be furring?
should we be furring?
should you be furring?
should they be furring? 	should I have furred?
should you have furred?
should he have furred?
should we have furred?
should you have furred?
should they have furred? 	should I have been furring?
should you have been furring?
should he have been furring?
should we have been furring?
should you have been furring?
should they have been furring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I fur?
shouldn't you fur?
shouldn't he fur?
shouldn't we fur?
shouldn't you fur?
shouldn't they fur? 	shouldn't I be furring?
shouldn't you be furring?
shouldn't he be furring?
shouldn't we be furring?
shouldn't you be furring?
shouldn't they be furring? 	shouldn't I have furred?
shouldn't you have furred?
shouldn't he have furred?
shouldn't we have furred?
shouldn't you have furred?
shouldn't they have furred? 	shouldn't I have been furring?
shouldn't you have been furring?
shouldn't he have been furring?
shouldn't we have been furring?
shouldn't you have been furring?
shouldn't they have been furring?